Internal-combustion engine.



P. PICTET 6a M. VERNAZ.

INTERNAL OMBUSTON ENGINE.

APPLIUATION FILED 001227.19111.

1,1 05AM Patented July 2s, 1914.

2 SHEETS--SHEET l.

P. PIGTET & M. VERNAZ.

INTERNAL ooMBUsTIoN mmm.

APPLICATION FILED 031237, 1013.

Panam@` July' 28, 1914.

narran s'rarnsmrarnwr arriba.

PIERRE PICTET, OF GENEVA, SXVIITZERLAND, AND MARCEL VERNAZ, OF ANNEMASSE, FRANCE.

INTERNAL-COIVIBUSTION ENGINE.

Specification. of Letters latent.

To all 'whom it may concern Be it known that We, Pinnen PIC/rer, a citizen of the Helvetia Confederacy, and resident of Geneva, Switzerlaml, and MAn- GEL VERNAZ, a citizen of the Freneh Repub lie, and resident of Annemasse, Haute Savoie, France, have invented Certain new and useful Improvements in InternaLCombust-ion Enginesof Whieh the 'following is a specification.

This invention relates to internal eombus` tion engines.

The object of the. invention is to provide improved means for admitting and exhaust ing the gas.

A further object of the invention is to provide in an internal combustion engine a working piston and a distrilultingl piston and means cooperating therewith to control the inlet and outlet ot' the gases.

The invention also comprehends improvements in the details of construction and arrangementot' parts which will be hereinafter described and particularly pointed out in the claims.

In the drawings: 'Figure l is a vertiral sect-ion of the upper portion of one eylinder of our improved engine. Fig. 2 is a eross section ot the same on the line A-li of Fig. 1. Fig. 3 is :t similar view on the line l-D ot' Fig. l. Fig. it is a diagrannnatie view illustrating the position oi the parts when the exhaust port open. Fig. 5 is a similar View illustrating the position ot' the parts when introducing a rharge. Fig. (i is a similar View, the ports being Closed. Fig. 7 is a similar viewe the parts being in position to compress the eharge. Fig. 8 is a similar vie\ the charge having been tired. Fig. t) is a similar view7 the parts being in position to just open the exhaust port, Fig. l() is a detail vertiral section oi' a moditied form of the improvement. Fig. l1 is a similar View of another modified `t'orm of the invention.

e indicates a cylinder, in the lower part of which operates what 'we term the workn ing piston m, connected b v a eonneeting rod n7 with a crank y), o't' a shaft 0. ln the upper part of the (cylinder operates what we term a distributing piston g, which has a parti tlon t, t'ornnng the upper part of the com bastion ehamber 1n the oyhnder. 'ihe dis tributing piston g, is provided with an annular recess g', and eontined in this recess and operating on'the inner snrtare ol' the eylinder, is a resilient ring o, which 'is shorter than the length olI the annular reeess, fora purpose to be described, Below the partition L, and registering with the interior ol the distributing piston and the annular recess g, is an inlet port a., which at the proper time, is designed to register with an inlet port c, in the cylinder e. Also formed in the eylinder, below the plane oi' the inlet port e, is an exhaust port The exhaust port is eontrolled by the distributing piston. When the distributing piston is near its limit of upward movement the ex' haust port is opened for the eseape ot' the burnt gases in the cylinder and upon the next suceeeding down-stroke olt said piston, said port'is elosed. rI he distributing pis ton "f/ is provided with packing rings d, to prevent eseape ol the gases, when the engine is operated. The distributing piston is eonneeted at i by a eonneeting rod fir, with the crank of a` shaft Z.

In operation, sha'tt o revolves `twifre to one revolution ot the shaft Z, so as to prop erly time the movements ot the two pistons. Assume the parts to be in the position shown in Fig. l. that is, the exhaust port is wide open and the burnt gases are being exhausted b v the upward movement ol' the working piston m, while the distributing 'piston is just about ready to deseeml. lipon Yfurther movement ot the shafts o and l, the burnt gases will be exhausted before the distributing piston will rover the exhaust port. and they working piston which travels faster than the distributing` piston also moves` down, the distrilulting piston following. During the tirst part o't' the downward movement ot the distritnlting` piston, the ring whieh irietionally engages the wall of the e'vlinder will remain stationary,henre the port u will yeommunieate with port t: and a eharge will he admitted. and port ',f will be closed. tributing pistou will earry with it the ring l), `shown in Fig. 5. and as the working piston la. is travelingdown a charge is being drawn into the cylinder. (.ontinued movement ot the parts will bring the, pistons to the positions shown .in Fig. (i, that is. the worte Patented July 2li, t tijd Continued movement of the dis` ti (l tl l) lill) ltl ti ius ing; piston has descended as fair as it can go, while the distributing piston will ilescenrl terther. llpon the criinlr passing the (lenti center, the piston ne starts up, and in time, pistong :ils-o starts to ascend, but of Course, slower than the movement ot piston mi, hence the clnirge is compressed. As shown in '7, it will be that when the pistons are in the positions just eleseriberl that the charge will he compressed :is stated. At this point it is to be noteil that when the distributingI piston starts to rise, the bottoni well ot' the recess engages the bottom of the ring Y), hence the letter :iets to close the inlet port (L, :is elearlyshown in Fig. 7. The charge becomes compressed unrl is lireil by the spnrlr plugl 1], then the working piston m :again commences to clescenf., while the distributing piston continues to rise, the inlet ports a and o being elosetl (hiring` this period, as shown in Fig. 8. [it the time the Working piston m reaches its; lower point the bottom of tl. flistriluiting,v piston uncovers the exhaust port f, :is shown in Fig. 9, so that innneoliately the piston m. eon'nnences to rise, the burnt h l 'ing piston rontinuiug to rise to Yfull' v open the port. iis shown in Fig. 4l. in 1ig. 11, two cylindersl r unil s .fire shown, saine being foi'ineotefl at the top by e passage r. The distributing piston operates in the cylinder r, :nul is constructed substantially the suine ns that prevhiusly described, excepttlnit it is inverteil, which ot course, necessitates inverting,` the inlet :incl outlet ports c :unl f. und the connecting' rofl 71: is attached to the bottom of the ps1 rtition 7n ri`he Working piston operates in the cylinder s. 0btiously, precisely the saine results will flow trom this construction, and where il, is iinpossible to install :in engine such shown in Fig. l, owing to hiclr ot' splice, substantielllv the seine result can he obtained by employing such :i construction as shown in Fig, l0, ln Fig. ll is shown n construction wherein the cylinder n in which the working piston in, operates, is ot' larger clio/meter than the cylinder t. in whirh the distributing piston operates. rlie cylinders fn, unil t may be integral, or senin-tite und belted together.

ii/'hait we eli-iin isz-H i. ln an internal combustion engine-r the .oinbinzition of :L cylinder iiorineil with an inlet' and an outlet port, n working' piston operating' in the Cylinder, ev hollow distributing piston operating in` the cylinder, suitl distributing piston having' :i partition nml :in inlet port below the partition, the outer periphery of the rlistril'auting piston having,` i recess with which the inlet port in r-'ziitl piston register :i sliilzible element litliinggg in the recess enel' bearing against the mises will he exhausted, the distributinner wull of the cylinder, the said; element beine' ol less-,length than the length ot the recess, ineens tor reciprocating the distributing piston, find ineens Ytor reciprooetingithe working piston tester thun the distributinga piston, whereby when the distributing piston descends, the sliclehle element Will be t'rictionally held against the Woll of the cilinder and uncover the inlet port in said piston and will be subsequently moved. by suifl piston and it charge Will be admitted ori/il will be eon'ipressed between saicl tvvo pistons.

2. in an internal combustion engine the combination of et cylinder formed with un inlet unil sin outlet. port, a Working piston operating," in the cylinder, a hollow clistributing piston operating in the cylinder, seid clistrilniting piston having a. partition :intl an inlet port formed. et onesiole oft the partition, the outer periphery et the distributing piston having" a recess With which the inlet port registers, e slidfible element fitting` in the recess and bearing against the inner Wall of the cylinder, the seid element being ot less length than the length o" the recess, Ineens for reciprocating the distributingpiston, :intl ineens tor reeiproceting the working piston 'foster then the distributing piston, whereby when the distributing piston moves in one direction the sliflzible element will betrictionslly lieltl against the wall ot the eylintler :incl uncover the inlet port in sziiil piston intl will be subsequently moved by 'Suid piston intl e charge will he :ulmittetl sind will be compressed between snirl two pistons.

3. ln en internal eoinbusuion engine, the combination of :i cylinder formeel With inlet and outlet ports, e Working piston operating in the cylinder', e hollow distributing" piston havingl :i partition and formed with on inlet port below seid partition, a slitlable sleeve operating in :iv recesst'orrnecl between the piston ond the c vlinfler, the sleeve being of less length than the recess, sind the sleeve heine; in trictionfil engagement with the ovliniler, inouns for reeiproeeting the (listrihutiiig piston, und moons for rompi-ocutiuef the working piston tester than the (listril'iuting piston., whereby when the listriliufing piston descends the sleeve will be trirtionully helil against the wall oi the ovl ini'ler :unl uncover the inlet port in suit. piston and will he sub-:equently iuoverl by sni i piston and :i rhurg'e will be mlrnitletl nnrl will be compressed between sni l two pistons.

4. ln :in internal combustion engine, the

combination or" it Cylinder formeel with.in-

`let and outlet ports, :i Working' piston operating in the cylinder, e hollow distributing' piston haring :i partition :intl operating' in the eylinrier :nul torniefl with ein inlet port below soi/l purtition :zuil oriented to reggislill ter with the iiile'r pori', in theicyiimim. mums; mountvd mi and npimfiri by 5h@ disrilmt'- ingr fusion im upon Hw, iiilu, pmts mi mic Si'olm :1mi vinse :mid iniiipuits mi the iinxi Sluueeiiing siiokc, the said ifitm' ummm i1i c'lili'iing :i slide who, iffctiuimllly hield against the cyiimim until mm'cd by the (lisa fl'ibutiiigl piston, mmm for operating Said distributing piston, and mums for operuting the iwi-king pistml'hviC" as fast :is said distributing piatmi. 

